(4) For the tax year 2015-16 Trevor has a trading profit of 109,000 and building society interest of 3,200 (net). He also paid interest of 1,000 on a personal loan taken out to purchase a co a computer for use in her employment (1) Show the computation for income tax liability. (2) Calculate the amount of tax savings if he reduces his trading profit by 5,000 to 104,000 (3) Calculate the amount of tax savings if he made a gross personal pension contribution of 5,000 (4) For the tax year 2015-16 Trevor has a trading profit of 109,000 and building society interest of 3,200 (net). He also paid interest of 1,000 on a personal loan taken out to purchase a co a computer for use in her employment (1) Show the computation for income tax liability. (2) Calculate the amount of tax savings if he reduces his trading profit by 5,000 to 104,000 (3) Calculate the amount of tax savings if he made a gross personal pension contribution of 5,000